Mark is graphing data collected from satellite images. He notices that a rift valley in the Red Sea keeps getting larger What type of plate boundary is he mapping?

Which of the following describes a situation where competition between producers exists

How can a give a full method for the experiment of separating sand from water by filtration? 1-materials 2-steps 3-conclusion also for water and salt separated by the evaporation or distillation process

At stp, which substance is the best conductor of electricity? a. nitrogen b. neon c. sulfur d. silver